Window mainframe component



FIG. 1 is a top, right, back isometric view of a window mainframe component illustrating a first embodiment of our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a back elevational view thereof, with the front elevational view being a mirror image of FIG. 3;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side elevational view thereof; and

FIG. 6 is a right side elevational view thereof.

FIG. 7 is a top, right, back isometric view of a window mainframe component illustrating a second embodiment of our new design;

FIG. 8 is a top view thereof;

FIG. 9 is a back elevational view thereof, with the front elevational view being a mirror image of FIG. 9;

FIG. 10 is a bottom view thereof;

FIG. 11 is a left side elevational view thereof; and,

FIG. 12 is a right side elevational view thereof.

The window mainframe component is shown with a symbolic break in its length. The appearance of any portion of the window mainframe component between the jagged break lines forms no part of the claimed design. The other broken lines in FIGS. 7-9 and 11-12 represent portions of the window mainframe component that form no part of the claimed design. 

CLAIM The ornamental design for a window mainframe component, as shown and described. 